What you need to know, by Dave Gallagher:
They seem to be multiplying. Price for the digital back only: $34,990.
Turns out it is a Sony sensor in this and the Hasselblad. Quite a heavy crop though which is a bit disappointing. The pixels though, aren't as small as those of the D800 and A7r by my maths. We can only hope that the sensor is cheaper to produce than medium format CCDs.
I can see the higher ISO appealing to high end event photographers but they won't really interest many commercial shooters.
Steve, why does everyone keep mentioning the a7R? It keeps popping up everywhere when these new MF sensors get discussed. Is it a really good camera?
Well it has (much) the same high res Sony sensor as the D800, that's the only reason I mentioned it. I have never tried it so couldn't say if it is any good, but it does seem a bit strange, as if you want the best out of the resolution you are going to need to carry a tripod making it not so compact.
The CMOS sensor might suit the Leica S very well as it has a similar crop and DSLR versatility.